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- Matthew Prince is suing his Park City neighbors over their Bernese Mountain dogs.
- They say it's retaliation for opposing Prince's plans to build his dream home.
- There's a hearing Tuesday at City Hall over whether Prince can proceed with the mansion.
Matthew Prince, the billionaire cofounder of cybersecurity company Cloudflare, is waging a legal battle with his neighbors over their Bernese Mountain dogs, Sasha and Mocha.